Factor out data_fabric_set_mmio_np and the helper functions it uses into
a separate compilation unit.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I58625c5a038f668f8e30ae29f03402e1e2c4bee3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77986
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>